Waterlands
Long Green Creek
USGS · 01584050
LONG GREEN CREEK
USGS · 01584050LIVE

LONG GREEN CREEK AT GLEN ARM, MD

TOWSON, MD39.4547°N, -76.4789°W Updated 14 hr ago
FLOW RATE
3cfs
GAUGE HT
0.97ft
AIR TEMP
77°F
WIND
7mph E
FISH INDEX
69SCORE / 100
GREAT · 4 OF 5
Flow Rate Historical Avg
MEDIAN FLOW RATE · 1 YEAR
3cfs 47.2% vs avg
Optimal band: 3–5 cfs
PERIOD HIGH
45cfs
PERIOD LOW
2cfs
RUNNABLE
75%
last 1 year in band

Gauge Height

0.97ft
Precipitation History
Your History · LONG GREEN CREEK AT GLEN ARM, MD

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Weather Conditions
WEATHER CONDITIONS
TODAY
83°
71°
MON
84°
66°
TUE
91°
67°
WED
99°
73°
THU
93°
74°
FRI
82°
66°
SAT
84°
60°
TIME
SUN
3
NOW
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
MON
12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
TUE
12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
WED
12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
THU
12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
FRI
12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
TEMP
hourly forecast
83°
mild
83°
83°
83°
82°
80°
76°
73°
72°
71°
70°
69°
68°
68°
68°
67°
66°
68°
72°
75°
77°
79°
80°
82°
83°
84°
84°
84°
83°
82°
79°
76°
74°
73°
71°
70°
69°
68°
68°
67°
67°
68°
72°
76°
80°
84°
86°
89°
90°
91°
91°
90°
89°
87°
83°
80°
79°
79°
77°
76°
75°
75°
74°
73°
73°
75°
80°
84°
88°
91°
94°
96°
98°
99°
99°
98°
96°
94°
90°
87°
86°
85°
83°
78°
77°
74°
75°
74°
74°
75°
78°
83°
86°
89°
91°
93°
86°
89°
90°
91°
89°
86°
82°
79°
77°
77°
74°
71°
70°
68°
67°
66°
66°
66°
66°
69°
WIND
mph · gust · dir
9mph E
G 12 mph
9
G12
E
10
G13
ESE
9
G12
ESE
10
G14
ESE
9
G15
ESE
8
G18
ESE
6
G11
ESE
5
G11
SE
5
G10
SE
5
G9
ESE
4
G8
ESE
4
G8
SE
4
G8
SE
4
G7
ESE
4
G5
ENE
4
G5
ENE
3
G4
NE
2
G7
ESE
4
G8
SSE
6
G7
SSE
6
G8
SSE
6
G7
SE
5
G6
SE
5
SE
5
G6
SE
7
G8
SE
7
G9
SE
5
G7
SE
5
G7
ESE
5
G10
SE
5
G11
SSE
6
G14
SSE
6
G13
SSE
5
G12
S
5
G13
SSW
4
G11
SSW
4
G11
SW
5
G11
WSW
4
G11
WSW
4
G10
WSW
4
G9
W
4
G9
W
4
G7
W
3
G6
WSW
5
G7
SW
5
G7
SW
6
G7
SW
6
G7
SSW
7
G8
SSW
6
G9
SSW
4
G9
SSW
4
G9
SW
3
G10
W
4
G8
W
5
G11
SW
6
G16
SW
7
G20
SW
7
G23
WSW
7
G24
WSW
7
G22
WSW
7
G20
W
6
G16
W
5
G14
W
5
G15
WNW
5
G17
W
6
G17
W
7
G14
W
8
G13
WNW
8
G12
WNW
7
G10
WNW
7
G10
WNW
8
G11
WNW
8
G11
W
9
G12
W
11
G13
W
10
G13
WSW
7
G13
WSW
4
G6
WSW
5
G7
W
6
G11
W
6
G15
WNW
5
G11
WNW
6
G16
NNW
5
G8
NNW
6
G9
N
3
G4
NE
3
N
1
G2
NNW
3
G4
NW
2
G4
WSW
4
G7
WSW
5
G10
W
8
G14
WNW
11
G17
WNW
12
G19
WNW
16
G21
NW
15
G22
NW
13
G22
WNW
13
G21
NW
12
G20
NNW
9
G21
NW
8
G16
NW
8
G22
NW
9
G28
NW
9
G25
NW
10
G24
NNW
8
G24
NNW
8
G22
NNW
8
G23
NNW
8
G24
NNW
8
G24
NNW
9
G24
NNW
10
G24
NNW
11
G23
NNW
12
G21
NNW
PRECIP
chance %
1%
1%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
1%
1%
0%
0%
0%
0%
0%
0%
0%
0%
0%
1%
1%
1%
1%
1%
1%
1%
1%
1%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
1%
1%
1%
1%
1%
1%
5%
5%
5%
5%
5%
5%
3%
3%
3%
3%
3%
3%
1%
1%
1%
1%
1%
1%
4%
4%
4%
4%
4%
4%
4%
4%
4%
4%
4%
4%
3%
3%
3%
3%
3%
3%
2%
CLOUDS
cover %
11%
clear
11%
6%
1%
6%
100%
100%
100%
44%
100%
100%
100%
100%
0%
7%
4%
4%
2%
4%
6%
8%
1%
0%
0%
0%
0%
0%
0%
0%
0%
1%
2%
0%
0%
3%
34%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
5%
5%
5%
0%
0%
0%
0%
0%
0%
0%
0%
5%
7%
5%
0%
0%
0%
0%
6%
0%
6%
17%
8%
100%
100%
100%
6%
6%
8%
100%
6%
5%
44%
100%
100%
100%
100%
100%
100%
100%
80%
100%
98%
100%
100%
100%
100%
83%
18%
98%
100%
100%
100%
100%
100%
0%
0%
6%
0%
1%
4%
3%
1%
0%
0%
PRESSURE
hPa · trend
1007
100710091009101110091008100810091006100310031002100099899999899799810021005
TemperatureWind / GustsPrecipitationCloud coverPressure
Nowscroll →
FISH INDEX
69
Temperature
Warm
Wind
Light
Pressure
Stable
Moon Phase
Average
DAYLIGHT
SUNRISE
05:49 AM
SUNSET
08:33 PM
14H 44M OF DAYLIGHT
MOON PHASE
Waning Crescent
5% illuminated

Station Location

39.4547, -76.4789
Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-12 00:00 UTC
Site #01584050·USGS

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